CN102687235B - Mercury-free high-pressure discharge lamp with a reduced amount of zinc halide - Google Patents
Mercury-free high-pressure discharge lamp with a reduced amount of zinc halide Download PDFInfo
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- CN102687235B CN102687235B CN201080051543.6A CN201080051543A CN102687235B CN 102687235 B CN102687235 B CN 102687235B CN 201080051543 A CN201080051543 A CN 201080051543A CN 102687235 B CN102687235 B CN 102687235B
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- Prior art keywords
- filler
- discharge lamp
- pressure discharge
- halide
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/827—Metal halide arc lamps
Abstract
The invention relates to a high-pressure discharge lamp for vehicle headlights, comprising a discharge vessel (10) which is sealed in a gas-tight manner and which has a discharge chamber (106). Electrodes (11, 12) and a filling for producing a gas discharge are enclosed in the discharge chamber, wherein the filling is designed as a mercury-free filling that contains at least xenon and halides of sodium, scandium, and zinc. The filling has an amount of zinc halide ranging from 0 mg to 1 mg per 1 cm3 of the discharge chamber volume; the amount of halides that is present in the discharge chamber (106) of the discharge vessel (10) ranges from 8 mg to 15 mg per 1 cm3 of the discharge chamber volume; the cold fill pressure of the xenon ranges from 1.0 megapascal to 1.8 megapascal; and the volume of the discharge chamber (106) of the discharge vessel (10) has a value ranging from 0.015 cm3 to 0.022 cm3.
Description
Technical field
The present invention relates to a kind of high-pressure discharge lamp as described in the preamble according to claim 1.
Background technology
Such as in EP 1 351 276 A2, disclose such high-pressure discharge lamp.Described document description has the high-pressure discharge lamp for car headlamp without mercury filler, and described have at the every 1cm of 2mg to 6mg without mercury filler
3zinc iodide content in the scope of discharge vessel volume.
Patent documentation US 7,126,281 B1 describes a kind of high-pressure discharge lamp for car headlamp, its have about 35 watts electric power consumption and without mercury filler, described without mercury filler comprise xenon and sodium metal, scandium, indium with the halide of zinc.
The mercury used before the zinc composition of filler instead of and need the so-called burning voltage for regulating high-pressure discharge lamp.Term " burning voltage " represent its ignition phase and startup stage terminate and reach the operating voltage of the high-pressure discharge lamp after its quasi-steady operation state, in described quasi-steady operation state, all filler compositions exist with gaseous state.But, in filler, use zinc composition to have following shortcoming: the luminous flux produced by high-pressure discharge lamp along with in filler Zn content increase and decline.
Summary of the invention
The object of the invention is, a kind of high-pressure discharge lamp without aforesaid drawbacks is provided.Especially, should provide a kind of high-pressure discharge lamp had without mercury filler, described high-pressure discharge lamp has electric power consumption and the similar burning voltage of minimizing compared with above-cited prior art and produces sufficiently high luminous flux for being used in car headlamp as light source.
According to the present invention, described object is realized by a kind of high-pressure discharge lamp of the feature had in claim 1.The especially favourable form of implementation of the present invention illustrates in the dependent claims.
High-pressure discharge lamp according to the present invention is set to the light source in the headlamp of motor vehicle, and the hermetic closed discharge vessel had with discharge space, electrode and the filler for generation of gas discharge is comprised at described discharge space, wherein filler is configured to without mercury filler, described without mercury filler comprise at least xenon and sodium, scandium with the halide of zinc.According to the present invention, the filler or be configured to that filler is configured to the Zn content with minimizing has at the every 1cm of 0mg to 1.0mg
3zinc halide content in the scope of discharge space volume without zinc filler, the halid amount in discharge space is positioned at the every 1cm of 8mg to 15mg
3in the scope of discharge space volume, the cold stuffing pressure (it is the pressure of xenon measured at the temperature of 25 degrees Celsius in discharge space) of xenon is positioned at the scope of 1.0 megapascal (MPa) to 1.8 megapascal (MPa)s, and the volume of discharge space has at 0.015cm
3to 0.022cm
3numerical value in scope.Mercury compound both can not also can not be incorporated in the discharge space of discharge vessel by term " without mercury filler " expression by mercury.
According to the present invention, a kind of high-pressure discharge lamp is realized by preceding feature, it is relative to having the electric power consumption reduced under similar burning voltage according to the high-pressure discharge lamp of prior art, and produce sufficiently high luminous flux, make described high-pressure discharge lamp be suitable as the light source in automotive headlight.Especially, the halide by reducing zinc in filler and zinc can reach high luminous flux.The relatively high stuffing pressure of xenon facilitates the sufficiently high burning voltage of high-pressure discharge lamp together with the dispensing of the little volume of discharge space and metal halide, makes it possible to abandon to regulate the burning voltage according to high-pressure discharge lamp of the present invention that mercury or mercury compound are added to the filler according to high-pressure discharge lamp of the present invention.
Advantageously, the content of the zinc halide in filler is greater than the every 1cm of 0mg
3discharge space volume, and be preferably placed at the every 1cm of 0.1mg to 1.0mg
3in the scope of discharge space volume, to guarantee sufficiently high burning voltage and the luminous flux of high-pressure discharge lamp.The zinc halide content be schematically illustrated in figure 3 in discharge space accounts for the relation between the burning voltage (curve 2) of the percentage by weight of halide amount and the luminous flux (curve 1) of high-pressure discharge lamp and high-pressure discharge lamp.Zinc halide content is described on a horizontal axis with the percentage by weight about halide total amount in filler.On vertical axis, (left side at Fig. 3) describes the luminous flux of high-pressure discharge lamp with lumen on the one hand, and (right side at Fig. 3) describes the burning voltage of high-pressure discharge lamp with volt on the other hand.Curve 1(solid line) relation of the luminous flux of high-pressure discharge lamp and the zinc halide content in filler, curve 2(dotted line are simultaneously shown) describe the relation of the burning voltage of high-pressure discharge lamp and the zinc halide content in filler.Know from curve 1 and 2 and find out, along with the increase of zinc halide content, the burning voltage of high-pressure discharge lamp raises and luminous flux declines.
Advantageously, additional indium halide is comprised according to the filler of high-pressure discharge lamp of the present invention, the content of the indium halide wherein in filler is less than or equal to the percentage by weight of 3.0% of halide total amount, and the content of the sodium halide be therefore significantly less than in filler and scandium halide.Indium halide content low in filler is used for the chromaticity coordinate regulating the white light launched from high-pressure discharge lamp according to the standard color chart of CIE 1931 and DIN 5033.Guarantee by the relatively low indium halide content in filler, produce the white light according to standard ECE regulations 99 according to high-pressure discharge lamp of the present invention.Higher indium halide content produces adverse influence to the luminous flux of high-pressure discharge lamp.
Advantageously, sodium halide content in filler is positioned at the scope of the percentage by weight of 30% to 50% of halide total amount, and the scandium halide content in filler is positioned at the scope of the percentage by weight of 30% to 60% of halide total amount, to produce the white light according to standard ECE regulations 99 of the colour temperature had in the scope of 4000 Kelvin to 4500 Kelvins.Additionally, in order to regulate burning voltage, can comprise according to the filler of high-pressure discharge lamp of the present invention is such as the thulium of the form of halogenation thulium, and the halogenation thulium content wherein in filler can be positioned at the scope of the percentage by weight of halid 10% to 30%.At this, the effect of thulium is similar to zinc, namely improves burning voltage, but luminous flux does not have so to reduce consumingly along with the increase of thulium content as in zinc.
Advantageously, the content of the zinc halide in filler be less than or equal to relative to halid total amount 6% percentage by weight.Therefore, it is possible to regulate sufficiently high burning voltage (40V), and owing to adding zinc, luminous flux is diminished.
Advantageously, in the region of discharge space, have the outline of oval shape according to the discharge vessel of high-pressure discharge lamp of the present invention and have columniform Internal periphery in region in-between the electrodes, wherein the ratio of the wall thickness of discharge vessel is applicable to following relation:
1.0≤D1/D2≤1.4
And be preferably even applicable to following relation:
1.2≤D1/D2≤1.3，
Wherein D1 represents wall thickness in the region in-between the electrodes of discharge vessel and D2 represents and the wall thickness in the end portion section of discharge space of discharge vessel is provided with electrode in described end portion section.
Due to above-mentioned wall thickness ratio, the discharge vessel according to high-pressure discharge lamp of the present invention has less convex curvature compared with the discharge vessel of the high-pressure discharge lamp according to prior art.Therefore, in high-pressure discharge lamp according to the present invention such as can by with realize according to virtual electrode relatively larger compared with in the high-pressure discharge lamp of prior art distance (measuring by X-ray radiography) according to ECE regulations 99, for the 4.2mm of car headlamp defined optics or the effective electrode distance of optics.Such as, be 3.6mm at the electrode distance according to the reality in the high-pressure discharge lamp of prior art, and the electrode distance of reality in high-pressure discharge lamp according to the present invention is preferably placed in the scope of 3.8mm to 4.0mm.Similarly, larger electrode distance contributes to the higher burning voltage according to high-pressure discharge lamp of the present invention relatively, make due to described reason, although decrease the amount of zinc composition and abandoned mercury in filler, but still sufficiently high burning voltage can be reached.
Preferably, discharge vessel in region in-between the electrodes has the interior diameter in the scope of 2.0mm to 2.7mm, interior diameter in the scope of especially preferred 2.1mm and 2.4mm, and the overall diameter in the scope of 5.0mm to 6.0mm, the overall diameter in the scope of especially preferred 5.3mm to 5.7mm.Thus, discharge vessel has relatively large wall thickness in region in-between the electrodes, and described larger wall thickness can contribute to the good thermal insulation improving bursting protection and discharge vessel.
Electrode according to high-pressure discharge lamp of the present invention preferably forms rod, and there is diameter in the scope of preferred 0.20mm to 0.30mm and diameter in the scope of especially preferred 0.25mm to 0.27mm, to guarantee the high ampacity of electrode, can with three of rated power times to the work of quintuplicate value during making high-pressure discharge lamp according to the present invention so-called startup stage, and can reach thus and be transitioned in the quasi-stationary operating state of high-pressure discharge lamp as far as possible rapidly, directly follow ignition phase startup stage of wherein said and the halide of filler described startup stage during evaporate.
As mentioned above, the cold stuffing pressure of the xenon in the filler of high-pressure discharge lamp according to the present invention is positioned at the scope of 1.0 megapascal (MPa) to 1.8 megapascal (MPa)s.But, especially preferred is in the scope of 1.5 megapascal (MPa) to 1.7 megapascal (MPa)s, because can improve burning voltage according to high-pressure discharge lamp of the present invention by relatively high xenon pressure and directly can produce white light after the lighting of high-pressure discharge lamp by high xenon pressure.
As mentioned above, halid amount in the inner chamber of the discharge vessel of high-pressure discharge lamp according to the present invention is positioned at the scope of 8 milligrams to 15 milligrams every 1 cubic centimetre of discharge space volume, and discharge space volume has the numerical value in the scope of 0.015 cubic centimetre to 0.022 cubic centimetre.Especially preferredly be, for high-pressure discharge lamp according to the present invention, halide amount in the scope of 10 milligrams to 14 milligrams every 1 cubic centimetre of discharge space volume and discharge space volume at 0.016 cubic centimetre in 0.019 cubic centimeter range, to realize the electric power consumption in the quasi-stationary operating state of high-pressure discharge lamp according to the present invention in the scope of 22 watts to 28 watts.
Can be configured to according to high-pressure discharge lamp of the present invention, this high-pressure discharge lamp is made to produce the luminous flux being less than or equal to 2000lm at its duration of work, high-pressure discharge lamp according to the present invention can be encased in the car headlamp without headlamp cleaning equipment.
Accompanying drawing explanation
Next, the present invention is elaborated according to preferred embodiment.As shown in the figure:
Fig. 1 illustrates the end view of the signal of high-pressure discharge lamp according to a preferred embodiment of the invention;
Fig. 2 illustrates that the part of the signal of the discharge space of the discharge vessel of the high-pressure discharge lamp described in FIG amplifies diagram;
Fig. 3 shows the figure of the luminous flux of high-pressure discharge lamp and the relation of burning voltage and the zinc halide content in filler.
Embodiment
The preferred embodiments of the present invention be the electric power consumption with 25 watts without mercury halide metallic vapour high-pressure discharge lamp.Described lamp is designed for and is used in car headlamp.Described high-pressure discharge lamp have be made up of quartz glass, there is 17mm
3the discharge space 106 of volume, the discharge vessel 10 of both sides sealing, ionogenic filler is included in described discharge space airtightly.In the region of discharge space 106, the outline of discharge vessel 10 forms oval shape, and forms cylindrical (Fig. 2) in the region of its Internal periphery between electrode 11,12.Therefore, the wall of discharge vessel 10 discharge space 106 region camber arch upward, and compared with on two ends of discharge space 106, between electrode 11,12, there is larger wall thickness, in described two ends, be provided with electrode 11,12.The ratio D1/D2 of wall thickness is positioned at the scope of 1.2 to 1.3.In other words, following relation is suitable for:
1.2≤D1/D2≤1.3
Wherein D1 represents the wall thickness in the region between electrode 11,12 of discharge vessel 10, and D2 represents the wall thickness in the end portion section of discharge space 106 of discharge vessel 10, is provided with electrode 11,12 in described end portion section.
In the middle part of discharge space 106, the interior diameter of discharge vessel is 2.2mm and its overall diameter is 5.5mm there.Two ends 101,102 of discharge vessel 10 seal by molybdenum film fusing department 103,104 respectively.Molybdenum film fusing department 103,104 has the thickness of the length of 7.5mm, the width of 2mm and 25 μm respectively.In the inner chamber of discharge vessel 10, there are two electrodes 11,12, at lamp duration of work, form between said electrodes and be responsible for photoemissive electrical discharge arc.Electrode 11,12 is made up of tungsten.The thickness of described electrode or its diameter are 0.26mm.The length of electrode 11,12 is respectively 6.5mm.Actual, namely by measured by X-ray radiography, distance between electrode 11,12 is 3.7mm, and optics between electrode 11,12 or optics coverage are about 3.9mm.This difference between the actual range of described electrode 11,12 and optical distance caused due to the optical characteristics (such as due to convex curvature and light refractive index) of the wall in the region of discharge space 106 of discharge vessel 10.Electrode 11,12 respectively by molybdenum film fusing department 103,104 with by the feed line 13 of lamp holder far-end with feedback electric wire 17 or be connected with the electric connection of the basic lamp holder 15 be made up of plastics conductively by the feed line 14 of lamp holder side.Discharge vessel 10 surrounded by the outside bulb shell 16 of glass.Outside bulb shell 16 has the projection 161 be anchored in lamp holder 15.Discharge vessel 10 has the tubular extension 105 be made up of quartz glass in lamp holder side, the feed line 14 of lamp holder side extends in described extension.
Discharge vessel 10 towards feedback electric wire 17 surf zone be provided with printing opacity, conduction coating 107.Described coating 107 along the longitudinal direction of lamp on the total length of discharge space 106 and the hermetic terminal 101,102 of discharge vessel 10 length about 50% part on extend.Coating 107 is arranged on the outside of discharge vessel 10, and extends on about 5% to 10% of the girth of discharge vessel 10.But, coating 107 also can on 50% of the girth of discharge vessel 10 or even be greater than discharge vessel 10 girth 50% on extend.So broadly form coating 107 and there is following advantage: described coating improves the efficiency of high-pressure discharge lamp, because described coating the part of infrared radiation produced by discharging to be reflected back in discharge vessel and cause thus optionally heat discharge vessel 10 be positioned at colder region under electrode at lamp duration of work, assemble the metal halide of ionogenic filler in this region.Coating 107 is made up of the tin oxide through doping, such as, by with the tin oxide of fluorine or Sb doped or such as form by with the tin oxide of boron and/or lithium doping.Described high-pressure discharge lamp works in horizontal level, in other words, has setting electrode 11,12 in a horizontal plane, is wherein oriented by lamp, makes to feed back the downward-extension of electric wire 17 at discharge vessel 30 and outside bulb shell 16.The details of the coating 107 of starting aid effect is played described in describing in EP 1 632 985 A1.Outside bulb shell 16 is made up of quartz glass, described quartz glass doped with the material of Ultraviolet radiation absorbing, such as cerium oxide and titanium oxide.The suitable glass ingredient for outside bulb shell glass is disclosed in EP 0 700 579 B1.
Comprise ionogenic filler in the discharge vessel by having cold stuffing pressure, the xenon of the stuffing pressure of 1.6 namely measured at the temperature of 25 ° of C megapascal (MPa)s and sodium, scandium, zinc and the iodide composition of indium.The burning voltage of lamp is about 40 volts.The colour temperature of described lamp is approximately 4500 Kelvins.Sodium metal in filler, scandium, zinc be 13.83mg/cm with the halide of indium or the total amount of iodide
3, i.e. 13.83 milligrams of every 1 cubic centimetre of discharge space volumes, wherein sodium metal, scandium, zinc as follows relative to the part by weight of halid total amount with the iodide of indium:
Sodium iodide: 43.4% percentage by weight, is equivalent to 6 mg/cm
3loading
Scandium iodide: 50.6% percentage by weight, is equivalent to 7 mg/cm
3loading
Zinc iodide: 5.8% percentage by weight, is equivalent to 0.8 mg/cm
3loading
Indium iodide: 0.2% percentage by weight, is equivalent to 0.03 mg/cm
3loading
This is equivalent to the sodium of 1 mole and the ratio of scandium is 2.5: 1.The color rendering index of complex metal vapor injection discharge lamp be 65 and its light output be 90 lm/W.Wall loading is about 80W/cm
2.High-pressure discharge lamp produces the luminous flux being less than or equal to 2000 lm, and therefore, it is possible to be operated in the car headlamp not having headlamp cleaning equipment, such as to produce daytime running lamps, fog lamp or lasting driving lamp.
After directly lighting gas discharge in the discharge vessel, complex metal vapor injection discharge lamp according to the present invention with its rated power of three times to five times or with its rated current work of three times to five times, to guarantee that the metal halide in ionogenic filler promptly evaporates.Directly after lighting gas discharge, because be present in discharge vessel with only having xenon state at this time point, described gas discharge is almost only born by xenon.High-pressure discharge lamp at this time point and so-called startup stage during work, during described startup stage, the metal halide transition of ionogenic filler is vapour phase, therefore as xenon maximal pressure discharge lamp, wherein light launch and the electrical characteristic of electric discharge, voltage drop particularly on discharge path, determined by xenon and electrode distance individually.When the above-mentioned iodide evaporation of ionogenic filler and described iodide participate in electric discharge time, just reach the quasi-stationary operating state of lamp, in this condition, lamp is with the burning voltage work of its rated power of 25 watts and 40 volts.Therefore, term " burning voltage " represents the operating voltage of the high-pressure discharge lamp in quasi-steady operation.
The embodiment illustrated in detail above the present invention is not restricted to.Such as, filler except sodium metal, scandium with the iodide of indium except also comprise iodate thulium.In addition, replace aforementioned metal iodide or except these metal iodides, other halide can also be used in filler, the bromide of such as these metals or chloride.
Claims (6)
1. for the high-pressure discharge lamp of car headlamp, there is hermetic closed discharge vessel (10), described discharge vessel has discharge space (106), electrode (11,12) and the filler for generation of gas discharge is comprised in described discharge space, wherein said filler is configured to the filler without mercury, it comprise at least xenon and sodium, scandium and the halide of zinc
The halid amount be wherein present in the described discharge space (106) of described discharge vessel (10) is positioned at the every 1cm of 8mg to 15mg
3in the scope of described discharge space volume,
Wherein the cold stuffing pressure of xenon is positioned at the scope of 1.0 megapascal (MPa) to 1.8 megapascal (MPa)s, and the volume of described discharge space (106) has at 0.015cm
3to 0.022cm
3numerical value in scope,
Wherein zinc halide content is greater than the every 1cm of 0mg
3described discharge space volume is to the every 1cm of 1.0mg
3in the scope of described discharge space volume,
It is characterized in that, described filler additionally comprises halogenation thulium, and the content of halogenation thulium is positioned at the scope of the percentage by weight of 10% to 30% of described halid total amount.
2. high-pressure discharge lamp according to claim 1, wherein said filler additionally comprises indium halide, and the content of indium halide in described filler is less than or equal to the percentage by weight of 3.0% of described halide total amount.
3. high-pressure discharge lamp according to claim 1, the content of the sodium halide wherein in described filler is positioned at the scope of the percentage by weight of 30% to 50% of described halid total amount.
4. high-pressure discharge lamp according to claim 1, the content of the scandium halide wherein in described filler is positioned at the scope of the percentage by weight of 30% to 60% of described halid total amount.
5. high-pressure discharge lamp according to claim 1, the described halid amount wherein in the described discharge space (106) of described discharge vessel (10) is positioned at the every 1cm of 10mg to 14mg
3in the scope of described discharge space volume.
6. high-pressure discharge lamp according to claim 1, wherein the described cold stuffing pressure of xenon is positioned at the scope of 1.6 megapascal (MPa) to 1.8 megapascal (MPa)s.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009052999.3 | 2009-11-12 | ||
| DE200910052999 DE102009052999A1 (en) | 2009-11-12 | 2009-11-12 | High pressure discharge lamp |
| PCT/EP2010/066472 WO2011057903A1 (en) | 2009-11-12 | 2010-10-29 | Mercury-free high-pressure discharge lamp with a reduced amount of zinc halide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102687235A CN102687235A (en) | 2012-09-19 |
| CN102687235B true CN102687235B (en) | 2015-07-08 |
Family
ID=43334513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080051543.6A Expired - Fee Related CN102687235B (en) | 2009-11-12 | 2010-10-29 | Mercury-free high-pressure discharge lamp with a reduced amount of zinc halide |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2499657B1 (en) |
| JP (1) | JP2013511117A (en) |
| CN (1) | CN102687235B (en) |
| DE (1) | DE102009052999A1 (en) |
| WO (1) | WO2011057903A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011082323A1 (en) * | 2011-09-08 | 2013-03-14 | Osram Ag | High-pressure discharge lamp for motor vehicle headlights |
| DE102014204932A1 (en) * | 2014-03-17 | 2015-09-17 | Osram Gmbh | High pressure discharge lamp |
| DE102015200162A1 (en) | 2015-01-08 | 2016-07-14 | Osram Gmbh | High pressure discharge lamp |
| JP2016181381A (en) * | 2015-03-24 | 2016-10-13 | 東芝ライテック株式会社 | Discharge lamp |
| JP2017098009A (en) * | 2015-11-20 | 2017-06-01 | 東芝ライテック株式会社 | Discharge lamp |
| JP6850434B2 (en) * | 2017-04-26 | 2021-03-31 | 東芝ライテック株式会社 | Discharge lamp |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053059A (en) * | 2004-10-29 | 2007-10-10 | 东芝照明技术株式会社 | Metal halide lamp and lighting equipment |
| DE102007018614A1 (en) * | 2007-04-19 | 2008-10-23 | Osram Gesellschaft mit beschränkter Haftung | High pressure discharge lamp and vehicle headlight with high pressure discharge lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4317369A1 (en) | 1993-05-25 | 1994-12-01 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | High-pressure discharge lamp and manufacturing method for a high-pressure discharge lamp |
| US6853140B2 (en) | 2002-04-04 | 2005-02-08 | Osram Sylvania Inc. | Mercury free discharge lamp with zinc iodide |
| JP2004172056A (en) * | 2002-11-22 | 2004-06-17 | Koito Mfg Co Ltd | Mercury-free arc tube for discharge lamp device |
| DE10312290A1 (en) | 2003-03-19 | 2004-09-30 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | High-pressure discharge lamp for vehicle headlights |
| EP1632985B1 (en) | 2004-09-07 | 2014-06-25 | OSRAM GmbH | High-pressure discharge lampe |
| JPWO2006046704A1 (en) * | 2004-10-29 | 2008-05-22 | 東芝ライテック株式会社 | Metal halide lamp and lighting device |
| EP1901333A4 (en) * | 2005-07-05 | 2009-12-02 | Harison Toshiba Lighting Corp | Metal halide lamp and illuminator employing it |
| US8193711B2 (en) * | 2006-11-09 | 2012-06-05 | Harison Toshiba Lighting Corp. | Metal halide lamp |
| CN101636816B (en) * | 2007-03-12 | 2011-09-14 | 皇家飞利浦电子股份有限公司 | Low power discharge lamp with high efficacy |
| JP2010524167A (en) * | 2007-04-05 | 2010-07-15 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Mercury-free high-intensity gas discharge lamp |
| US8436539B2 (en) * | 2007-09-24 | 2013-05-07 | Koninklijke Philips Electronics N.V. | Thorium-free discharge lamp with reduced halides and increased relative amount of Sc |
| JP5313710B2 (en) * | 2008-02-12 | 2013-10-09 | 株式会社小糸製作所 | Mercury-free arc tube for discharge lamp equipment |
| WO2009127993A1 (en) * | 2008-04-14 | 2009-10-22 | Philips Intellectual Property & Standards Gmbh | High efficiency discharge lamp |
-
2009
- 2009-11-12 DE DE200910052999 patent/DE102009052999A1/en not_active Withdrawn
-
2010
- 2010-10-29 EP EP10775785.8A patent/EP2499657B1/en not_active Not-in-force
- 2010-10-29 CN CN201080051543.6A patent/CN102687235B/en not_active Expired - Fee Related
- 2010-10-29 JP JP2012538272A patent/JP2013511117A/en active Pending
- 2010-10-29 WO PCT/EP2010/066472 patent/WO2011057903A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053059A (en) * | 2004-10-29 | 2007-10-10 | 东芝照明技术株式会社 | Metal halide lamp and lighting equipment |
| DE102007018614A1 (en) * | 2007-04-19 | 2008-10-23 | Osram Gesellschaft mit beschränkter Haftung | High pressure discharge lamp and vehicle headlight with high pressure discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102687235A (en) | 2012-09-19 |
| WO2011057903A1 (en) | 2011-05-19 |
| EP2499657A1 (en) | 2012-09-19 |
| JP2013511117A (en) | 2013-03-28 |
| EP2499657B1 (en) | 2014-12-03 |
| DE102009052999A1 (en) | 2011-05-19 |
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